摘要
目的 对肺癌及相应的肺癌旁组织标本中蛋白激酶C(PKC)及其抑制物 (PKCI)的活性表达规律进行对照研究。方法 收集 2 6例肺癌及癌旁组织标本 ,通过检测同位素放射来测定标本胞浆和胞膜中PKC的比活性和PKCI对PKC活性抑制百分数。结果 2 6例肺癌组织细胞胞浆中PKC比活性显著高于癌旁组织 (P <0 .0 1) ;而非小细胞癌胸膜中PCK比活性明显低于癌旁组织 (P <0 .0 5 ) ,小细胞癌胞膜中PKC比活性与癌旁组织无明显差异 (P <0 ,0 5 )。另外 ,2 6例肺癌组织胞浆中PKCI的抑制活性明显低于癌旁组织 (P <0 .0 5 ) ,而胞膜中PKCI的抑制活性则与癌旁组织无显著差异 (P >0 .0 5 )。结论 肺癌组织中PKC被激活而活性增高 ,同时PKCI表达降低说明其对PKC的调控能力下降 ,以上表明PKC和PKCI可能在肺癌的发生及发展中起重要作用。
Objective To compare the active expression of PKC and PKCI in lung cancer with its paracancer tissue sample.Methods 26 lung cancer and paracancer tissue samples were collected and the specific activity in cell plasma and membrane and inhibition percentage of PKCI to PKC were detected by radio-activity of isotope.Results Specific activity of PKC in cytoplasma of 26 lung cancer tissues was obviously higher than that of paracancer tissue(P<0.01);while specific activity of PKC in cell membrane of non-small cell cancer was obviously lower than that of paracancer tissue (P<0.05).There was no obvious difference in specific activity of PKC between cell membrane of small cell cancer and paracancer tissue.In addition,the inhibiting activity of PKCI in cytoplasma of 26 lung cancer was obviously lower than that of paracancer tissue (P<0.05),but there was no significant difference of that in cell membrane (P>0.05).Conclusion In lung cancer,PKC is activated to higher activity with decreased expression of PKCI,which suggests decreased control ability of PKC.It is suggests that PKC and PKCI may play an important role in the pathogenesis and progression of lung cancer.
出处
《中国肿瘤临床与康复》
2002年第1期28-30,共3页
Chinese Journal of Clinical Oncology and Rehabilitation